<script language="javascript">
<!--
 /*判断数组中是否存在某个元素的方法*/
 function isExistInArr(_array, _element){
  if(!_array || !_element) return false;
  if(!_array.length){
   return (_array == _element);
  }
  for(var i=0; i<_array.length; i++){
   if(_element == _array[i]) return true;
  }
  return false;
 }

 /*去除数组中重复元素的方法*/
 function distinct(_array){
  if(!_array || !_array.length) return _array;
  var newArray = new Array();
  for(var i=0; i<_array.length; i++){
   var oEl = _array[i];
   if(!oEl || this.isExistInArr(newArray, oEl)) continue;
   newArray[newArray.length] = oEl;
  }
  return newArray;
 }
 var origArr = [1,2,3,4,1,4,1,3];
 origArr = distinct(origArr);
 alert(origArr);
//-->
</script>